Once, the distinctions were clear: the Circus handled all things political while the Department dealt with matters military. But over the years the power and influence had passed to the Circus. Now suddenly the department had a job on its hands. Uncertain evidence suggested Soviet missiles being put in place near the German border, while vital film had gone missing and a courier was dead. The Department had to find an old hand to prove its mettle. Fred Leiser, German-speaking Pole turned Englishman and a qualified radio-operator, must be called back to the colours and sent East...